<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../vue.js"></script>
  </head>

  <body>
    <div id="app">
      <!-- 修改基本数据类型 Vue 可以监视到 会重新渲染视图 -->
      <button @click = "count++">点击</button>
      count的值是{{count}}
    </div>
    <script>
      Vue.config.productionTip = false;

      const vm = new Vue({
        el: "#app",
        data() {
          return {
            count: 0
          };
        },
      });
    </script>
  </body>
</html>
